java - org.hibernate.TypeMismatchException : Provided id of the wrong type

Question

我第一次使用 MyEclipse For Spring，它支持 hibernate 。

下面是mysql数据库的相关部分:

CREATE TABLE 
`delidete`.`DatiGeneraliVistoContabile` (
    `DatiGeneraliId` int NOT NULL,       <---- P.K., Foreign key to table Datigenerali
    `SoggettiCodice` int NOT NULL,       <---- P.K., Foreign key to table Soggetti
    `DGVCDataInizio` date NOT NULL, 
    `DGVCDataFine` date) ;

CREATE TABLE 
`delidete`.`DatiGeneraliParereTecnico` (
    `DatiGeneraliId` int NOT NULL,       <---- P.K., Foreign key to above table (DatigeneraliId)
    `TecnicoParereCodice` int NOT NULL,  <---- P.K., Foreign key to above table (SoggettiCodice)
    `DGTPDescrizione` varchar (255) NOT NULL,
    `DGTPDataInizio` date NOT NULL, 
    `DGTPDataFine` date) ;

ALTER TABLE `delidete`.`DatiGeneraliVistoContabile` 
ADD PRIMARY KEY (`DatiGeneraliId`, `SoggettiCodice`) ;

ALTER TABLE `delidete`.`DatiGeneraliParereTecnico` 
ADD CONSTRAINT `IDatiGeneraliParereTecnico` 
    FOREIGN KEY (`DatiGeneraliId`, `TecnicoParereCodice`) 
        REFERENCES `DatiGeneraliVistoContabile` (`DatiGeneraliId`, `SoggettiCodice`) ;

ALTER TABLE `delidete`.`DatiGeneraliVistoContabile` 
ADD CONSTRAINT `IDatiGeneraliVistoContabile2` 
    FOREIGN KEY (`DatiGeneraliId`) 
        REFERENCES `DatiGenerali` (`DatiGeneraliId`) ;

ALTER TABLE `delidete`.`DatiGeneraliVistoContabile` 
ADD CONSTRAINT `IDatiGeneraliVistoContabile1` 
    FOREIGN KEY (`SoggettiCodice`) 
        REFERENCES `Soggetti` (`SoggettiCodice`) ;

这是两个生成的类:

Datigeneralivistocontabile:

@IdClass(delidete.domain.DatigeneralivistocontabilePK.class)
@Entity
@Table(catalog = "delidete", name = "datigeneralivistocontabile")
@XmlAccessorType(XmlAccessType.FIELD)
@XmlType(namespace = "DeliDete/delidete/domain", name = "Datigeneralivistocontabile")
public class Datigeneralivistocontabile implements Serializable
{
    @ManyToOne(fetch = FetchType.LAZY)
    @JoinColumns({@JoinColumn(name = "DatiGeneraliId", referencedColumnName = "DatiGeneraliId", nullable = false, insertable = false, updatable = false)})
    @XmlTransient
    Datigenerali datigenerali;

    @Column(name = "DatiGeneraliId", nullable = false)
    @Basic(fetch = FetchType.EAGER)
    @Id
    @XmlElement
    Integer datiGeneraliId;

    ----------------------------------------------------------------------
    //don't know why MyEclipse put this link into this class
    @OneToOne(mappedBy = "datigeneralivistocontabile", fetch = FetchType.LAZY)
    @XmlElement(name = "", namespace = "")
    Datigeneralipareretecnico datigeneralipareretecnico;
    ----------------------------------------------------------------------

    @Temporal(TemporalType.DATE)
    @Column(name = "DGVCDataFine")
    @Basic(fetch = FetchType.EAGER)
    @XmlElement
    Calendar dgvcdataFine;

    @Temporal(TemporalType.DATE)
    @Column(name = "DGVCDataInizio", nullable = false)
    @Basic(fetch = FetchType.EAGER)
    @XmlElement
    Calendar dgvcdataInizio;

    @ManyToOne(fetch = FetchType.LAZY)
    @JoinColumns({@JoinColumn(name = "SoggettiCodice", referencedColumnName = "SoggettiCodice", nullable = false, insertable = false, updatable = false)})
    @XmlTransient
    Soggetti soggetti;

    @Column(name = "SoggettiCodice", nullable = false)
    @Basic(fetch = FetchType.EAGER)
    @Id
    @XmlElement
    Integer soggettiCodice;

    constructors, getters, setters, toString, other stuff
}

其他类

Datigeneralipareretecnico:

@IdClass(delidete.domain.DatigeneralipareretecnicoPK.class)
@Entity
@Table(catalog = "delidete", name = "datigeneralipareretecnico")
@XmlAccessorType(XmlAccessType.FIELD)
@XmlType(namespace = "DeliDete/delidete/domain", name = "Datigeneralipareretecnico")
public class Datigeneralipareretecnico implements Serializable
{
    @ManyToOne(fetch = FetchType.LAZY)
    @JoinColumns({@JoinColumn(name = "IDEnte", referencedColumnName = "DatiGeneraliId", nullable = false)})
    @XmlTransient
    Datigenerali datigenerali;

    @Column(name = "DatiGeneraliId", nullable = false)
    @Basic(fetch = FetchType.EAGER)
    @Id
    @XmlElement
    Integer datiGeneraliId;

    @PrimaryKeyJoinColumn
    @OneToOne(fetch = FetchType.LAZY)
    @XmlElement(name = "", namespace = "")
    Datigeneralivistocontabile datigeneralivistocontabile;

    @Temporal(TemporalType.DATE)
    @Column(name = "DGTPDataFine")
    @Basic(fetch = FetchType.EAGER)
    @XmlElement
    Calendar dgtpdataFine;

    @Temporal(TemporalType.DATE)
    @Column(name = "DGTPDataInizio", nullable = false)
    @Basic(fetch = FetchType.EAGER)
    @XmlElement
    Calendar dgtpdataInizio;

    @Column(name = "DGTPDescrizione", nullable = false)
    @Basic(fetch = FetchType.EAGER)
    @XmlElement
    String dgtpdescrizione;

    @Column(name = "TecnicoParereCodice", nullable = false)
    @Basic(fetch = FetchType.EAGER)
    @Id
    @XmlElement
    Integer tecnicoParereCodice;

    constructors, getters, setters, toString, other stuff
}

还有两个PK类别:

public class DatigeneralivistocontabilePK implements Serializable
{
    @Column(name = "DatiGeneraliId", nullable = false)
    @Basic(fetch = FetchType.EAGER)
    @Id
    public Integer datiGeneraliId;

    @Column(name = "SoggettiCodice", nullable = false)
    @Basic(fetch = FetchType.EAGER)
    @Id
    public Integer soggettiCodice;
}

public class DatigeneralipareretecnicoPK implements Serializable
{
    @Column(name = "DatiGeneraliId", nullable = false)
    @Basic(fetch = FetchType.EAGER)
    @Id
    public Integer datiGeneraliId;

    @Column(name = "TecnicoParereCodice", nullable = false)
    @Basic(fetch = FetchType.EAGER)
    @Id
    public Integer tecnicoParereCodice;
}

现在，当我尝试保存 Datigeneralivistocontabile 实体时，一切正常，但是当我尝试打开 jsp 来显示该实体时，我得到:

GRAVE: Servlet.service() for servlet [DeliDete Servlet] in context with path  [/DeliDete] threw exception [Request processing failed; nested exception is java.lang.IllegalArgumentException: org.hibernate.TypeMismatchException: Provided id of the   wrong type for class delidete.domain.Datigeneralipareretecnico. Expected: class   delidete.domain.DatigeneralipareretecnicoPK, got class   delidete.domain.DatigeneralivistocontabilePK] with root cause
 org.hibernate.TypeMismatchException: Provided id of the wrong type for class delidete.domain.Datigeneralipareretecnico. Expected: class delidete.domain.DatigeneralipareretecnicoPK, got class delidete.domain.DatigeneralivistocontabilePK
at org.hibernate.event.def.DefaultLoadEventListener.onLoad(DefaultLoadEventListener.java:135)
at org.hibernate.impl.SessionImpl.fireLoad(SessionImpl.java:1080)
at org.hibernate.impl.SessionImpl.internalLoad(SessionImpl.java:1028)
at org.hibernate.type.EntityType.resolveIdentifier(EntityType.java:623)
at org.hibernate.type.EntityType.resolve(EntityType.java:431)
at org.hibernate.engine.TwoPhaseLoad.initializeEntity(TwoPhaseLoad.java:140)
at org.hibernate.loader.Loader.initializeEntitiesAndCollections(Loader.java:898)
at org.hibernate.loader.Loader.doQuery(Loader.java:773)
at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:270)
at org.hibernate.loader.Loader.doList(Loader.java:2449)
at org.hibernate.loader.Loader.listIgnoreQueryCache(Loader.java:2192)
at org.hibernate.loader.Loader.list(Loader.java:2187)
at org.hibernate.loader.hql.QueryLoader.list(QueryLoader.java:452)
at org.hibernate.hql.ast.QueryTranslatorImpl.list(QueryTranslatorImpl.java:363)
at org.hibernate.engine.query.HQLQueryPlan.performList(HQLQueryPlan.java:196)
at org.hibernate.impl.SessionImpl.list(SessionImpl.java:1258)
at org.hibernate.impl.QueryImpl.list(QueryImpl.java:102)
at org.hibernate.ejb.QueryImpl.getResultList(QueryImpl.java:241)
-----------------------------------------------------------------------
at delidete.dao.DatigeneralivistocontabileDAOImpl.findAllDatigeneralivistocontabiles(DatigeneralivistocontabileDAOImpl.java:109)
at delidete.dao.DatigeneralivistocontabileDAOImpl.findAllDatigeneralivistocontabiles(DatigeneralivistocontabileDAOImpl.java:93)
-----------------------------------------------------------------------
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:309)
at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:183)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:150)
at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:110)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:202)
at $Proxy61.findAllDatigeneralivistocontabiles(Unknown Source)
----------------------------------------------------------------------- 
at delidete.service.DatigeneralivistocontabileServiceImpl.loadDatigeneralivistocontabiles(DatigeneralivistocontabileServiceImpl.java:226)
-----------------------------------------------------------------------
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:309)
at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:183)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:150)
at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:110)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:202)
at $Proxy88.loadDatigeneralivistocontabiles(Unknown Source)
-----------------------------------------------------------------------
at delidete.web.DatigeneralivistocontabileController.listDatigeneralivistocontabile(DatigeneralivistocontabileController.java:466)
-----------------------------------------------------------------------
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.springframework.web.bind.annotation.support.HandlerMethodInvoker.invokeHandlerMethod(HandlerMethodInvoker.java:176)
at org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.invokeHandlerMethod(AnnotationMethodHandlerAdapter.java:426)
at org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.handle(AnnotationMethodHandlerAdapter.java:414)
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:790)
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:719)
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:644)
at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:549)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:621)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:304)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at com.opensymphony.sitemesh.webapp.SiteMeshFilter.obtainContent(SiteMeshFilter.java:129)
at com.opensymphony.sitemesh.webapp.SiteMeshFilter.doFilter(SiteMeshFilter.java:77)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at org.springframework.orm.jpa.support.OpenEntityManagerInViewFilter.doFilterInternal(OpenEntityManagerInViewFilter.java:113)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:224)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:185)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:151)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:100)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:929)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:405)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:269)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:515)
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:302)
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
at java.lang.Thread.run(Thread.java:619)

我的类位于“delidete”包中。抛出该异常的方法是:

@Transactional
public Set<Datigeneralivistocontabile> findAllDatigeneralivistocontabiles(
        int startResult, int maxRows) throws DataAccessException
{
    Query query = createNamedQuery("findAllDatigeneralivistocontabiles",
            startResult, maxRows);
    return new LinkedHashSet<Datigeneralivistocontabile>(
            query.getResultList());   <---- this line throws the exception
}

它调用的namedquery是:

@NamedQuery(name = "findAllDatigeneralivistocontabiles", query = "select myDatigeneralivistocontabile from Datigeneralivistocontabile myDatigeneralivistocontabile")

查询“select * from datigeneralivistocontabile;”在MySQL提示符下就可以了:

mysql> select * from datigeneralivistocontabile;
+----------------+----------------+----------------+--------------+
| DatiGeneraliId | SoggettiCodice | DGVCDataInizio | DGVCDataFine |
+----------------+----------------+----------------+--------------+
|              1 |              1 | 2011-11-02     | 2011-11-03   |
+----------------+----------------+----------------+--------------+
1 row in set (0.00 sec)

mysql>

我不知道该怎么办，因为我管理了数十个像这两个这样的实体，没有出现任何问题。我注意到的是，这是我第一次获得 @OneToOne 注释。也许正是这个导致了异常......

先谢谢大家了

编辑:尝试将列名称 TecnicoParereCodice 更改为 SoggettiCodice，以匹配第一个表中的列的名称，但没有任何更改:我重新搭建了所有内容，运行相同的测试并得到相同的错误

Answer 1

由于主键相同但属性名称不同，我像这样修改了数据库:

CREATE TABLE 
`delidete`.`DatiGeneraliVistoContabile` (
`DatiGeneraliId` int NOT NULL,       <---- P.K., Foreign key to table Datigenerali
`SoggettiCodice` int NOT NULL,       <---- P.K., Foreign key to table Soggetti
`DGVCDataInizio` date NOT NULL, 
`DGVCDataFine` date) ;

CREATE TABLE 
`delidete`.`DatiGeneraliParereTecnico` (
`DatiGeneraliId` int NOT NULL,       <---- P.K., Foreign key to above table (DatigeneraliId)
`SoggettiCodice` int NOT NULL,       <---- P.K., Foreign key to above table (SoggettiCodice)
`DGTPDescrizione` varchar (255) NOT NULL,
`DGTPDataInizio` date NOT NULL, 
`DGTPDataFine` date) ;

重新搭建了两个实体的支架并更改了 Datigeneralipareretecnico 类，如下所示:

**@IdClass(delidete.domain.DatigeneralivistocontabilePK.class)**
@Entity
@Table(catalog = "delidete", name = "datigeneralipareretecnico")
@XmlAccessorType(XmlAccessType.FIELD)
@XmlType(namespace = "DeliDete/delidete/domain", name = "Datigeneralipareretecnico")
public class Datigeneralipareretecnico implements Serializable
{
    ....
}

正如您在 Datigeneralipareretecnico 类中看到的，我在 Datigeneralivistocontabile 类中使用了 PK 类，一切顺利。我知道这不是解决问题的正确方法，但是嘿它有效!希望能帮助别人..